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TST: add test for mixed dtypes of df col index #47382 #55720

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merged 3 commits into from
Oct 30, 2023
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TST: add test for mixed dtypes of df col index #47382 #55720

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add test for mixed dtypes of df col index #47382
mliu08 Oct 27, 2023
8b240f5
modified test to use result and expected dfs
mliu08 Oct 28, 2023
bcae40e
Merge branch 'pandas-dev:main' into mixed-col-dtype-test
mliu08 Oct 28, 2023
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9 changes: 9 additions & 0 deletions pandas/tests/frame/test_arithmetic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2132,3 +2132,12 @@ def test_enum_column_equality():
expected = Series([True, True, True], name=Cols.col1)

tm.assert_series_equal(result, expected)


def test_mixed_col_index_dtype():
# GH 47382
df1 = DataFrame(columns=list("abc"), data=0.0, index=[0])
df2 = DataFrame(columns=list("abc"), data=0.0, index=[0])
df1.columns = df2.columns.astype("string")
df3 = df1 + df2
assert df3.columns.dtype == "object"
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Could you construct an expected DataFrame result and use tm.assert_frame_equal(result, expected)?

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Of course! Just committed that modification.

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